A kind of preparation method of close-fit elastic curing unit

Abstract

The invention provides a method for preparing a close-fitting elastic curing unit, which includes the following steps: S1. Flip the sleeper 180°, place it inside the mold of the preparation device, and place the upper surface of the sleeper upside down on the upper surface of the base; S2. Place crushed stones at the discharge port, and adjust the compactness of the crushed stones; S3. Inject polyurethane into the compacted crushed stones; S4. Put the first loading plate at the bottom of the first hydraulic rod and the bottom of the second hydraulic rod The second loading plate at the end presses on the upper surface of the crushed stone; S5. pressurizes the crushed stone through the hydraulic rod, compacts the crushed stone and polyurethane to form the first bed block and the second bed block; S6. forms a close-fitting The sleeper of the elastic curing unit and the first bed block and the second bed block formed by the pressurized polyurethane and the crushed stone are demoulded; S7. Reverse 180° to place the close-fitting elastic curing unit upright. The present invention combines standard molds with pressure equipment to make the gravel track bed compact and then add polyurethane to make the polyurethane cured track bed more stable.

Description

technical field [0001] The invention relates to the field of tracks, in particular to a method for preparing a solidified track system. Background technique [0002] The traditional ballast track structure has a series of advantages such as strong maintainability and good elasticity. However, due to the characteristics of the granular particles that make up the ballast of the ballast bed, there are also problems such as poor track geometric state maintenance ability and difficult control of ballast particle density. question. [0003] In addition, the compactness of bulk ballast particles in the ballasted track structure is the key factor determining the mechanical properties of the ballast bed and the cumulative deformation in the later period. For example, the bulk ballast bed can be made to a reasonable density by means of prefabrication in the factory, and then polyurethane is used for pouring Strengthening the structure can improve the mechanical properties of the ball...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the prior art that the compactness of ballast ballast is difficult to control and that the lower ballast bed and the upper sleeper need to be combined as a whole, the present invention provides a method for preparing a close-fitting elastic curing unit. By laying the sleeper upside down, the The impact on compactness during preparation solves the above problems

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